Finding the Fourth Proportional to 102,402.40, 153,585.15 and 72,699.53
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Solution
The fourth proportional to 102,402.40, 153,585.15 and 72,699.53 is: 109,036.19
Step by Step Solution
- Step 1: Write the proportion equation
102,402.40 : 153,585.15 = 72,699.53 : x - Step 2: Convert to fraction form
102,402.40/153,585.15 = 72,699.53/x - Step 3: Cross multiply
102,402.40x = 153,585.15 × 72,699.53 - Step 4: Simplify right side
102,402.40x = 11,165,567,486.13 - Step 5: Solve for x
x = 11,165,567,486.13/102,402.40 - Step 6: Final answer
x = 109,036.19
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.